JPH0330577U - - Google Patents

Description

[Brief explanation of drawings]

Fig. 1 is a configuration diagram of the main parts of an engine ignition system according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of the operation of the ignition system, and Fig. 3 is a diagram showing the magnetic flux passing through the core of the pulsar coil of the ignition system and Figure 4 is a diagram of the waveform of the voltage induced in the winding; Figure 4 is a configuration diagram of the main parts of an engine ignition system in another embodiment; Figure 5 is a diagram of the magnetic flux passing through the core of the pulsar coil of the ignition system and the winding. FIG. 6 is a waveform diagram of the output voltage of the rectifier circuit of the ignition system, FIG. 7 is a configuration diagram of the main parts of the engine ignition system in another embodiment, and FIG. 8 is a diagram of the waveform of the induced voltage. An explanatory diagram of the operation of the ignition system, Fig. 9 is a waveform diagram of the magnetic flux passing through the core of the ignition coil of the ignition system, and voltage and current induced in the primary winding of the ignition coil, and Fig. 10 is a diagram of the waveforms of the voltage and current induced in the primary winding of the ignition system. Fig. 11 is an explanatory diagram of the relationship between the interrupting current and the advance angle width, and Fig. 11 is an explanatory diagram of the advance angle width in comparison with the conventional device of the same ignition device.
2A is an explanatory diagram of the strikeout spark gap in comparison with the conventional device of the same ignition device, FIG. 12B is an explanatory diagram of the ignition timing in comparison of the same ignition device with the conventional device,
FIG. 13 is a waveform diagram of the voltage induced in the pulsar coil of a conventional ignition device, FIG. 14 is an overall configuration diagram of the same ignition device, and FIG. 15 is a configuration diagram of the main parts of yet another conventional ignition device. , Figure 16 is a waveform diagram of the magnetic flux passing through the core of the ignition coil of the same ignition device, and the voltage and current induced in the primary winding of the ignition coil.
The figure is an explanatory diagram of the relationship between the cut-off current and the advance angle width of the ignition device. 1, 11, 21... Flywheel (ferromagnetic material), 3, 13, 23... Magnet, 4, 14... Pulsar coil, 5, 25... Core, 17... Rectifier circuit, 24... Ignition coil .

Claims (1)

[Claims for Utility Model Registration] 1. An engine ignition system configured to determine the engine ignition timing using voltage induced in a pulsar coil interlinked with the magnetic flux of a magnet rotating integrally with a flywheel, The magnetic resistance of the magnetic circuit formed by the magnet, the ferromagnetic material to which the magnet is attached, the core of the pulser coil, and the air gap between the core and the ferromagnetic material or magnet is defined as: An engine characterized in that the gap length in the first half of the linkage period between the magnetic flux of the magnet and the pulsar coil is set larger than the gap length in the second half, so that the leading side of the flywheel is larger than the lagging side. igniter. 2. In an engine ignition system configured to determine the ignition timing of the engine by using a voltage induced in a pulsar coil interlinked with the magnetic flux of a magnet rotating integrally with a flywheel, the voltage induced in the pulsar coil An ignition device for an engine, comprising a rectifier circuit that performs full-wave rectification, and the ignition timing is determined based on the output voltage of the rectifier circuit. 3. In an engine ignition system having a structure in which the ignition timing of the engine is determined using a voltage induced in an ignition coil interlinked with the magnetic flux of a magnet rotating integrally with a flywheel, the magnet and the magnet are attached to the The magnetic resistance of the magnetic circuit formed by the ferromagnetic material, the core of the ignition coil, and the air gap between the core and the ferromagnetic material or magnet is calculated by the magnetic flux of the magnet and the ignition coil. An ignition device for an engine, characterized in that the gap length in the first half of the linkage period is set larger than the gap length in the second half, so that the leading side of the flywheel is larger than the lagging side.